Oil well fishing tool



July 22, l94:1- H. W. SHANNON OIL WELL FISHING TOOL Filed Aug. 5, 193s 2shejs-sheet 1 gill/1091,

July 22 1941- H. W. SHANNON 2,250,440

v OIL WELL FISHING' TOOL Filed Aug. 5, 1938 2 sneets--sneetV 2 Inventor`#wz/y WV. fe? 7727-011 Attorneus Patented July 22, 1941 UNITED starescargar ortica Application August 5, 1938, Serial No. 223,350

3 Claims.

This invention relates generally to an oil well fishing tool, andparticularly to improvements upon the subject matter of my prior PatentNo. 2,094,419, granted September 28, 1937, and an important object ofthe present invention is to provide for- (l) Fishing out the rods andthe tubing all together-at the same time, so as to eliminate thenecessity for using different fishing tools for the rods and for'thetubing, as are ordinarily necessary when the rods and the tubing areboth lost in the well.

(2) Enabling breaking the hold of the shing tool on `the tubing withoutrunning the rods to break the hold, in the eventY that the lost tubingis fast, it being necessary only to let the weight of the tubing down onthe fishing tool and' turn the fishing tool of the present inventiona-fraction of a revolution to the left to break the hold. Y (3) Enablingshing both the rods and the tubing and drawing them out of the welltogether in cases where the rods are sticking above the tubing caught inthe well, through the provision of a hole in the fishing tool to passthe rods, thereby eliminating the necessity to remove the rodsseparately which ordinarily hold the fishing tool oi the tubing.

(4) Enabling easily connecting the shing tool with tubing which has beendropped in the well and become bent or crooked and leaning against theside of the well wall, in a simple operation of turning the shing toolofk the present invention a part of a revolution toward the right uponits contact with the tubing.

Other important objects and advantages of the present invention will beapparent from a reading of the followingdescription taken in connectionwith the drawings, wherein for purposes of illustration I have Ishown alpreferred embodiment of my invention. l In the drawings- Figure 1 is ageneral transverse vertical sectional vie'w taken through the embodimentand showing the fishing tool in Icontracted position.

Figure 2 is a horizontal sectional View taken through Figure 1approximately on the line 2--2 and looking downwardly in the directionof the arrows.

Figure 3 is a view similar to Figure lgbut showing the fishing tool inexpanded position.

Figure 4 is a perspective view of the upper part of the slip hanger.

Figure 5 is a transverse vertical sectional view showing the head of thetool with the working parts removed.

Figure 6 is a perspective view of the shoe.

Referring in `detail to the drawings, the numeral 5 generally designatesthe hollow cylindrical shell of the tool which is threaded at its upperend to receive the reduce threaded portion 6 on the head 'I which isexternally threaded on its lower end to provide the reduced externallythreaded portion 8 to thread into the top ofthe shoe 9. The lower partof the interior ofthe shell 5 has the tapered annular wall- I 0 to V`actin conjunction with 'the angulated radially outward faces of the slipsto be described.

The shoe 9 has the frustro-conicalfopening vII which opens therethrough,the smaller top thereof coinciding with the opening in the bot-'v tom ofthe shell 5. This opening II has a sloping narrow ledge I2 which startsat the outer edge of the shoe and goes about one-thirdy of the distancearound the inside of the shoe and tapers to an end, for the purpose ofguiding the tubing past the cut out in the shoe.

The head 'l is a generally cylindrical block having opening through itslower partthe uniformly cylindrical bore I3 which is formed withdiametrically opposite vertical slots I4 and I5 to slidably receive thelugs I6 and Il on-the'upper part of the slip hanger which is generallydesigf nated I8. 'Ihe slip hanger I8 comprises the tubular part I9,which has a bore 29 largeenough in size to pass the rods with the lugsI6 and I'I located adjacent its upper end and the latch bolt receivinghole 2I which is located ata point degrees from the lugs. On the lowerend of the tube I9 is the enlargement V22 which is located in the shell5 below the head 1 and has a frustoconical opening 23 ywith the smallendup and slips 24 secured by means generally designated 25 in slots 26formed in the peripheral edge of the enlargement 22. The slips 24 havethe shanks 2T on the lower end of which are ,thefjaws 28 which have theratchet toothed innerfsurface 29 and the slanting outer surface 30 forcooperation with the tapering shoulder IIl` in the lower end of theshell 5. A helical spring 3| is circumposed on the part I9 of thesliphanger and works between the top of the enlargement 22 and the bottom ofthe head I'I so as to ordinarily depress the slip hanger in the mannerillustrated in Figure 3 of the drawings when the latch bolt 32 isdisengaged from the receiving hole 2I as'indicated in Figure 3 of thedrawings. y.

The latch bolt 32 comprises a head 33 which works in a radial recess 34in the side of the head I and carries the latch bolt 32 extendingthrough 1a conforming opening in the inner end of the recess 34 forengagement with the hole 2I in the slide hanger tube I9. A retractingspring 35 interposed between the head 33 and the inner wall of theopening 34 normally maintains the latch in the position shown in Figure3, from which disengaged position the latch may be manually pushed intothe position shown in Figure 1. In the up or released position of theslip hanger I8, it may be held in such position independently of thelatch 32 by rotating the slip hanger so as to move the lugs I6 and I'Iout of the vertical slots I4 and I5 and into the groove 4I. To releasethe slip hanger IS from this position it is rotated so as to again bringthe lugs I6 and I'I into the upper ends of' the slots I4 and I5, downalong which theA lugs can then move.

Opening through the top of the upper part' of the head 1 is a uniformlycylindrical ,bore 3S whose lower end is tapered as indicated by thenumeral 3T to' a reduced diameter portion 38 which opens into the top ofthefbore I3 and is concentric therewith; and in this bore 35v islocated' a helical spring 39 which substantially iills thebore inexpanded condition and which presses downwardly on circumferentiallyvspaced jaws 40 which are shaped andv arranged similarly to the jaws 28-of theslip hanger and work in conjunction with the tapered bore portion3-1. A groove 4I is cut in the top of the bore portion I3, said groovecommunicating with the upper ends of the slots'I4 andv I5 alreadydescribed'.

Threaded on a reducedupper portion i2` on the head is the cap 43( whichhas a bore 44 suinciently large to'pass the rods, and this cap hasthereduced exteriorl'y` threaded upper portion 45 to accommodate theconnection 431 of the pipe 41.

To release the fishing tool from a retrieved pipe, it is only necessaryto press vdownwardly on the head I until the slip hanger goes up intothe head 'I and then to press lightly with the thumb on the latch head33 and to hold the latch in` while turningV the head to a positionwhereat the' pin is received in the hole ZI in the slip hanger, whereatthe operator may take the fishing tooloi the retrieved pipe or tubing byhand.

Although 1".' have shown and' described herein a preferred embodiment ofmy invention, it is to be definitely understood that I do not desire tolimit the applicationl of the invention thereto, and anyA change orchanges may be made in the structure and arrangement of the parts,within the spirit of the invention and the scope of the subjoinedclaims.

Having described the invention, what is claimed as new is: p

1*. A iishing tool comprising a tubular body having a shoe on itslower-end; said shoe being formed with an upwardly tapering opening forsimultaneously receiving and 'centering well tubing and rods, saidopening being formed with a cut-out in one side thereof, said openingbeing further formed with a sloping ridge starting at a` radially inwardpoint and terminating at a radially outward point adjacent said cut-outfor carrying the rod` and/or tubing past said cutout.

2. A iishing tool for the simultaneous recovery of related sections oflost sucker rod and drill pipe, said fishing tool comprising a Abodyhaving a shoe on its lower end for hooking the rod and the drill pipe,said body being tubular and having a relatively large bore having ataper at its lower end, a head on the upper end of said body formed witha relatively small bore formed entirely therethrough and through whichthe portion of the hooked sucker rod extending above the hooked drillpipe is adapted to pass, the bore of said head having an internal flangeintermediate the upper and lower ends thereof and tapered on its upperside, the opening in said flange being only sufficiently large to passthe sucker rod, circumferentially arranged wedge grips operating in thebore above and on the tapered upper side of said flange, spring meansurging said grips downwardly to grip the sides of the rod in engagementwith said grips, and slip hanger means, said slip hanger meanscomprising a portion operating inthe said bore of the head below saidiiange, said slip hanger means comprising another portion located withinthe bore of-` said body, said portion comprising a tube "toslidelongitudinallyon and be guided Aby the hookedbody and wedge slipsdepending from said rtube and working on the taper at the lower endofthe bore of said body, and spring means urging said slip meansdownwardly to work the slips on said taper and cause said slips to gripthe sides of the hooked drill'pipe, whereby withdrawal of the tool fromthe well recovers both the sucker rod and the drill pipe at the sametime.

3. A iishing tool comprising a body having a shoe on its lower end forhooking lost sucker rod and drill pipe, a head on the upper end of said'body, said body being formed with a relatively large kbore having ataper at its lower end and said head being formedfwith a relativelysmall bore extending entirely through said head to accommodate theportion of the sucker rodextend.- ing above the lost drill pipe, anintermediate iiange in the bore in the head, slip hanger means, saidslip hanger means comprising an upper tubular portion arranged to slidealong and be guided by the sucker rod extending therethrough and throughthe bore in said" head, said tubular portion working in the bore of theyheadbelow said iiange, lateral lugs on said! tubular portion engaging invertical slots formed in the side walls of the bore in the head belowsaid flange, the bore of said head being formed with a horizontalannular groove into'which the upper ends of said slots open and intowhich the saidr lugs can be rotated to hold said tubular portion in itselevated position, said slip hanger means further comprising anenlargement on the lower end of said tubular portion located within thebore of said body, said enlargement having a iiaring bore positioned toguide the sucker rod into the bore of said tubular portion, normallyexpanded wedge slips depending from said enlargement, spring meansworking between said head and the top of said enlargement for urgingsaid slip hanger means in a downward direction to apply said wedge slipsto said taper to force saidf slips to grip the sides of the hooked drillpipe, said tubular portion being formed with a radial hole in the sidewall thereof', and a radially movable latch carried by said body forengagement in saidradal hole.

HENRY W. SHANNON'.

